say it: in-FAWR-muhl
informal is an adjective meaning "not formal". It carries 4 recorded senses.
not formal
“conservative people unaccustomed to informal dress”
“an informal free-and-easy manner”
“an informal gathering of friends”
not officially recognized or controlled
“an informal agreement”
“a loose organization of the local farmers”
used of spoken and written language
Definitions, synonyms and semantic relations for informal come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.